摘要:
Disclosed is a subsystem for a vapor-compression system having a compressor (14) and a condenser (22) and including a storage assembly (46) fluidly communicable with a compressor inlet (14a) of the compressor (14) for flow of refrigerant. The storage assembly (46) receives and stores refrigerant in a storing configuration, and releases refrigerant stored therein to the compressor inlet (14a) of the compressor (14) in a releasing configuration. The subsystem further includes a flow-directing assembly (38) in fluid communication with the storage assembly (46) for flow of refrigerant, and fluidly communicable with a condenser inlet (22a) of the condenser (22) and a compressor outlet (14b) of the compressor (14). The flow-directing assembly (38) is configured to direct refrigerant from the compressor outlet (14b) to the storage assembly (46) in a first flow configuration, and direct refrigerant from the compressor outlet (14b) to the condenser inlet (22a) in a second flow configuration.
摘要:
Provided is an air-conditioner refrigerant injecting method that enables precise and quick injection of an optimum amount of refrigerant . In an air-conditioner (1) refrigerant injecting method of injecting a specified amount of refrigerant into a closed-cycle refrigerant circuit (3) in which an outdoor unit (10) and a plurality of indoor units (11) to (16) are connected via refrigerant pipes (2), the pipe lengths and pipe diameters of the refrigerant pipes (2A) to (2M) connecting the outdoor unit (10) and the plurality of indoor units (11) to (16) installed on the respective floors of a structure (40) are identified insofar as they can be reliably measured or estimated, the minimum required refrigerant amount required by the air conditioner (1) is calculated on the basis of the pipe lengths and pipe diameters, the resulting amount of refrigerant is additionally injected in advance, and then the refrigerant is automatically injected by an automatic refrigerant injection function until a specified injection amount is reached.
摘要:
A variable refrigerant volume system and control method thereof. The variable refrigerant volume system comprises: a compressor (1); a four-way valve (19); an indoor unit; a liquid tube (22), the first end thereof being connected to the indoor unit, the second end thereof being connected to the third valve port of the four-way valve (19), and a condenser (18) being provided on the liquid tube (22); a low pressure air pipe (23), the first end thereof being connected to the indoor unit, and the second end thereof being connected to the fourth valve port of the four-way valve (19); a refrigerant adjustment tank (6), the first port thereof being connected to the liquid tube (22), the second port thereof being connected to the low pressure air pipe (23), and the third port thereof optionally communicating with the liquid tube (22) or the low pressure air pipe (23). The refrigerant adjustment tank (6) provides refrigerant to the variable refrigerant volume system when the system requires more refrigerant, and recycles refrigerant from the variable refrigerant volume system when the system requires less refrigerant. The variable refrigerant volume system can flexibly control a refrigerant recycling amount in accordance with a refrigerant operation situation, thus ensuring system reliability.
摘要:
An air conditioner is arranged so as to be able to accurately judge a refrigerant filling state within the air conditioner regardless of environmental and installation conditions. The air conditioner has a computing section 102 for computing a condenser liquid phase area ratio that is a value related to an amount of liquid phase portion of the refrigerant within a high pressure-side heat exchanger, based on refrigerant condensation temperature of the high pressure-side heat exchanger, outlet super-cooling degree of the high pressure-side heat exchanger, intake air temperature of the high pressure-side heat exchanger, a difference of enthalpy of inlet and outlet of the high pressure-side heat exchanger and specific heat at constant pressure of a refrigerant solution at the outlet of the high pressure-side heat exchanger and a judging section 106 for judging the refrigerant filling state within the air conditioner based on a comparison of the value computed by the computing section 102 with a predetermined value.
摘要:
A method and a station (20) for recovery and recharging of refrigerant in motor vehicles, wherein at the end of the coolant recovery step, i.e. at the end of the emptying of the A/C system of the vehicle, an amount of coolant is taken from the cylinder and in a completely automated manner, by operating the charging solenoid valves, fills the pipes so as to have a relative pressure of 2-3 bar. Thereafter, the coolant amount is recovered and is sprayed on the wall of a distiller of the station (20), thus facilitating the "cleaning" of its wall and enabling recovery of oil from the distiller. The slight pressure generated further pushes any oil residues standing in the coalescing filter towards the drain.
摘要:
Vorrichtung und Verfahren zum Warten einer Klimaanlage, wobei die Vorrichtung zumindest eine erste Kupplung (10) zum Anschließen der Vorrichtung an einen ersten Serviceanschluss der Klimaanlage, einen Vorratsbehälter (3) für das Kältemittel, einen Kompressor (4) und eine Vielzahl an Sperrventilen (101-113) zur selektiven Freigabe unterschiedlicher Fluidverbindungen aufweist. Die Vorrichtung weist einen Membranspeicher (7) mit einer Druckseite (7a) und einer von der Druckseite (7a) durch die Membran (7c) des Membranspeichers (7) getrennte Speicherseite (7b) auf. Durch Schaltkombinationen der Sperrventile (101-113) sind eine Auffüll-Fluidverbindung (A) für das flüssige Kältemittel von einem Steigrohr (3a) des Vorratsbehälters (3) zur Speicherseite (7b) des Membranspeichers (7), eine Druckaufbau-Fluidverbindung (B) für ein Druckfluid von einem Anschluss (30a) eines Druckfluidspeichers (30) über den Kompressor (4) zur Druckseite (7a) des Membranspeichers, und eine Einfüll-Fluidverbindung (C) von der Speicherseite (7b) des Membranspeichers (7) zur ersten Kupplung (10) selektiv freigebbar.
摘要:
Use of a gaseous mixture, selected from the group consisting of—propylene in a concentration from 90% to 99% by weight and a gas selected from the group consisting of butene, ethylene and ethane or mixtures thereof in a concentration from 1% to 10% by weight; as replacement or alternative refrigerant gas for R404A, R507A and/or R407C, and/or other replacement or alternative refrigerants for R404A, R507A and R407C containing HFC (hydrofluorocarbons), HFO (hydrofluoro olefins) and HFE (hydrofluoro ethers).
摘要:
A method for converting a refrigerant recovery unit from use with a first refrigerant to use with a second refrigerant includes the steps of opening, with a controller, solenoids along a refrigerant path to remove residue of the first refrigerant into a holding vessel, operating a vacuum pump, as indicated by the controller, to further remove the residue of the first refrigerant from the refrigerant path, introducing, via the controller, an amount of the second refrigerant into the refrigerant path, determining, with a refrigerant identifier, a purity of the second refrigerant in the refrigerant path. A kit is also provided to convert the refrigerant recovery unit for use with the first refrigerant to the second refrigerant.